.where_main {
    position: relative;
    width: 100vw;
    height: 100vh;
    background: #fff;
    overflow: hidden;
    .top_back {
        width: 100%;
        height: 3.2rem;
        background-image: url('https://s.qunarzz.com/train_touch/pictures/top_title.png');
        background-size: cover;
    }
    .main_box {
        position: absolute;
        top: 2rem;
        left: 0.2rem;
        right: 0.2rem;
        bottom: 0;
        padding: 0.5rem 0.5rem;
        background: #fefefe;
        border-radius: 0.2rem 0.2rem;
        .come_go {
            padding-bottom: 0.4rem;
            display: flex;
            align-items: center;
            justify-content: space-around;
            font-size: 0.4rem;
            border-bottom: 1px solid #f2f2f2;
        }
    }
}
.city_select {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    background: #f2f2f2;
    z-index: 10;
    overflow: auto;
    .select_main {
        font-size: 0.36rem;
        background: #f5f5f5;
        &>a {
            padding-left: 0.1rem;
            display: block;
            font-size: 0.4rem;
            font-weight: 600;
            line-height: 0.8rem;
        }
        &>ul>li {
            padding-left: 0.1rem;
            background: #fff;
            height: 0.74rem;
            line-height: 0.74rem;
            border-bottom: 0.01rem solid rgb(242, 242, 242);
        }
    }
    .city_nav {
        position: fixed;
        right: 0;
        top: 1rem;
        bottom: 1rem;
        display: flex;
        flex-direction: column;
        &>a {
            flex: 1;
            width: 0.6rem;
            text-align: center;
            // line-height: 0.6rem;
            font-size: 0.32rem;
        }
    }
}